baber/WOPTO huggingface dataset:
Patent CA-2197312-C (CA)
Title: Enhancements in pulping with dissolved solids control
Inventor: PROUGH J ROBERT
IPC: D21C7/08
Filed: 1995-06-01
Granted: 2002-09-10
Abstract: The sulfide ion concentration and sulfidity of kraft cooking liquor during kraft cooking of cellulose pulp is selectively increased. After treatment in a first treatment zone in which impregnation or kraft cooking takes place using a kraft cooking liquor having a first sulfide ion concentration and sulfidity, black liquor is extracted from the material, liquid is withdrawn from the material and dilution liquid is added to the withdrawn liquid and the withdrawn liquid with dilution liquid is reintroduced. In a second treatment zone after the first zone a second kraft cooking liquor is introduced having a second sulfide ion concentration and sulfidity greater than the first sulfide ion concentration and sulfidity (typically by about 20-50%), including by manipulating controlling the flow rate of extraction and the flow rates of withdrawal of liquid and addition of dilution liquid.  The pressure of the continuous digester is controlled in a unique manner that avoids disruptions to the column of pulp continuously moving downwardly in the digester, anywhere in the digester, but particularly avoids non-uniform, unstable material in the countercurrent washing zone. The pressure is controlled by withdrawing liquid from, and introducing liquor into, the digester at at least one additional extraction-dilution loop aside from the main extraction of the digester and the wash dilution liquid introduction mechanism below the wash screens. Pressure can also be maintained (e.g. at about 130-170 psi) by also controlling the amount of wash dilution liquor, and by varying the extraction flow.
Patent CA-2197342-C (CA)
Title: Cdma demodulating apparatus
Inventor: ANDOU HIDEHIRO
IPC: H04B1/707
Filed: 1996-06-12
Granted: 2001-11-06
Abstract: A CDMA demodulating apparatus with an improved interference canceling effect when there are a large number of communicators. A reception signal having a frame configuration in which a pilot signal of a known pattern is inserted between information signals is received from a plurality of communicators. Transmission data of each communicator is demodulated, an interference canceler for estimating is provided in a plurality of stages, in each channel of each stage, a variation of transmission path is estimated in each path to achieve data demodulation and estimation of interference replica. The later the stage, the more error of interference signal replica can be reduced, thereby improving the interference canceling effect.      An even better effect can be obtained when interference canceling is performed after detecting a reception level of each channel by summation of reception power of each path of each channel, and channel ranking is determined in the order of higher reception level.
Patent CA-2199288-C (CA)
Title: Aluminium electrowinning cell with improved carbon cathode blocks
Inventor: DE NORA VITTORIO
IPC: C25B11/12
Filed: 1995-08-30
Granted: 2008-06-17
Abstract: An electrolytic cell for the electrowinning of aluminium from alumina dissolved in a halide-containing molten electrolyte, has a cathode cell bottom made of a series of carbon cathode blocks (10) connected side-by-side transversally of the cell by glue or ramming paste, each one provided with steel or other conductive bars (11) across the cell for the delivery of current. A series of anodes (15) faces a pool or layer of molten aluminium on the cathode cell bottom which is preferably coated with an aluminium-wettable refractory coating (35). Movement of the aluminium pool (40) or layer is decreased by providing the top surfaces of the carbon blocks (10) with a series of parallel channels (25) or grooves along the direction of the conductive bars, transverse to the cell. In use, these channels (25) or grooves are covered by, and restrain, the pool or the layer of molten aluminium, in particular against movement in a direction transverse to the channels or grooves, so as to greatly decrease movement of the aluminium pool or so as to facilitate the collection/evacuation of aluminium, which substantially improves cell operation and extends cell life.
Patent CA-2205303-C (CA)
Title: Apparatus for inspecting a gear
Inventor: FLAIR HENRY J
IPC: G01M13/02
Filed: 1995-08-02
Granted: 1999-10-19
Abstract: A master gear (100) for measuring, in a parallel axis gear measuring apparatus (10), tooth profile, tooth pitch and tooth thickness of a work gear (200). The master gear (100) has a plurality of adjacent teeth separated by a tooth spacing that varies as a repeatable sequence of spacings, wherein the master gear (100) contacts only a single tooth of the work gear (200) during measurement of work gear tooth profile and tooth thickness. The master gear (100) contacts only two teeth of the work gear (200) during a transition between measurement of tooth profile of individual teeth of the work gear (200), wherein tooth pitch is measured during the transition. The master gear (100) also has transverse operating pressure angle dependent on a transverse pressure angle at an outer diameter of the work gear (200), a transverse pressure angle at a form diameter of the work gear (200), a transverse pressure angle at a pitch diameter of the work gear (200), a transverse tooth thickness at a pitch diameter of the work gear (200) and a pitch diameter of the work gear (200). In one embodiment, the master gear (100) has helical teeth having a tooth spacing and a gear width dependent on a contact ratio of the work gear (200). In another embodiment, the master gear (100) has spur teeth for measuring a work gear (200) having spur teeth. The master gear (100) having spur teeth is defined by parameters relating to a pressure angle of an imaginary outer diameter of the work gear (200) and a pressure angle of an imaginary form diameter of the work gear (200).
Patent CA-2207331-C (CA)
Title: Method for associating data bearing objects with user interface objects
Inventor: WILLIAMSON RICHARD
IPC: G06F9/44
Filed: 1995-12-07
Granted: 2003-02-25
Abstract: The present method provides objects called association objects (350) that are interposed between a controlling object (340) and each user interface object (360). The association object for a particular kind of user interface object contains code that allows the association object to interact with the specific kind of user interface object. Each association object also presents a standard interface to a controlling object, regardless of the kind of user interface object with which the association object is associated. The association object takes care of any conversion or translation that must be performed to convert a data value sent by the controlling object into an appropriate value that can be displayed by the user interface object.  Accordingly, instead of requiring different interface code for each kind of user interface object used (360), a controlling object (340) requires only a single block of interface code for communicating with all association objects (350).
Patent CA-2212717-C (CA)
Inventor: HREHA KENNETH W
IPC: B25C11/00
Filed: 1997-08-11
Granted: 2000-09-26
Abstract: A panel lifter pry bar comprises an integrally formed elongated bar with an elongated substantially rectilinear shank portion having a U-shaped portion at one end disposed to one side of the longitudinal axis of the shank portion, and an inverted U-shaped portion at the other end disposed to the other side of the longitudinal axis.  At the end of the U-shaped portion spaced from the shank portion is a claw, and at the end of the inverted U-shaped portion, is an elongated panel lifter portion which extends at an obtuse angle to the shank portion.  The U-shaped and inverted U-shaped portions provide fulcrums on opposite sides of the longitudinal axis of the shank portion for the claw and panel lifter portions respectively.
Patent CA-2213084-C (CA)
Title: Tub cushion
Inventor: KVALVIK PRERNA J
IPC: A47K3/12
Filed: 1997-10-02
Granted: 2003-07-29
Abstract: A bathtub cushion is formed of a resilient material, such as a closed cell plastic foam.  The cushion covers the interior of the bottom of the tub, extending upwardly to cover the interior walls of the tub and the edges or rim of the tub.  The cushion may be formed as a sheet of uniform thickness, on the order of one to two inches thick, or may alternatively be formed with a thinner bottom portion and thicker upper walls and upper edge, to better cushion any impact of a bather who might slip in the tub.  The cushion is removably secured within the tub by suction cups disposed about the entire tub contact surface of the cushion, and includes drainage grooves formed in the upper surface of the bottom portion to facilitate drainage.   The cushion may also include a head rest, which may include a radio, cassette deck, or other audio system therein, as desired.  The cushion may be formed to fit within a conventional generally rectangular or oval bathtub, and may also be configured to fit within a hot tub having a round or other shape. The present cushion adds a significant measure of safety for a bather, with its high friction surface to reduce slippage and the thickly cushioned upper edge to reduce the likelihood of injury in the event of a fall.  A significant increase in comfort is also provided by the padding and optional headrest and audio system.
Patent CA-2213118-C (CA)
Title: Data reduction of sensed values in an implantable medical device through the use of a variable resolution technique
Inventor: WOODSON DRURY L
IPC: H03M7/30
Filed: 1996-05-31
Granted: 2001-05-29
Abstract: An implantable device (3) is disclosed which acquires physiological data and status information. The physiological data is compressed, reducing the memory requirement of the implantable device and/or increasing the amount of data that can be stored. The compression technique uses variable resolution while maintaining desired accuracy. The physiological data, such as heart beat interval time, is converted into a digital value. The digital representation then is divided into sub-ranges, and various resolution values are assigned to each sub-range. Each resolution is selected to stay within the desired accuracy. The interval time is divided by the particular resolution to obtain a digital value for the interval time wihtin that range. The digital value then is corrected based upon the sub-range to obtain the compressed encoded digital value, which can then be stored in memory together with other desired data.
Patent CA-2216320-C (CA)
Title: Stable emulsions and dry powders of mixtures of fat-soluble vitamins, their preparation and use
Inventor: HAHNLEIN WOLFGANG
IPC: A23K20/174
Filed: 1997-10-10
Granted: 2006-11-28
Abstract: The present invention relates to stable emulsions and dry powders of mixtures of fat-soluble vitamins, and to processes for their preparation and to their use.
Patent CA-2216816-C (CA)
Title: Procede de production de compositions ou constituants detersifs granulaires
Inventor: BROUGHAM PETER RUTHERFORD
IPC: C11D3/37
Filed: 1996-03-27
Granted: 2001-08-21
Abstract: Cette invention se rapporte à un procédé de préparation d'une composition ou d'un constituant détersif granulaire dont la masse volumique en vrac est supérieure à 650 g/l. Ce procédé consiste à disperser un liant liquide dans un courant de poudre d'un mélangeur à grande vitesse afin d'obtenir des agglomérats granulaires. Le courant de poudre comprend la zéolite A cristalline dont la capacité d'absorption d'huile est d'au moins 40 ml/100 g, de préférence d'au moins de 45 ml/100 g et idéalement d'au moins 50 ml/100 g.
Patent CA-2218632-C (CA)
Inventor: FISHER MARK ROBERT
IPC: B41M5/327
Filed: 1997-10-20
Granted: 2004-08-24
Abstract: An improved thermally-responsive record material useful for bar coding is disclosed comprising a support having provided thereon in substantially contiguous relationship: a substantially colorless dye precursor comprising 2-anilino-3- methyl- 6-dibutylaminofluoran; a sensitizer selected from the group consisting of 1,2-diphenoxyethane and 1,2-(4-methylphenoxy)ethane; an acidic developer material comprising bis-(3-allyl-4-hydroxyphenyl)sulfone which upon being heated reacts with said dye precursor to develop color; and a binder material. The improved thermally-responsive record material and bar code of the invention has a high print contrast signal; high dimensional stability in terms of low bar width growth degradation; a high percentage of successful decodes; and high contrast of the bar code with the background. The invention overcomes difficulties in past efforts to bring together a confluence of these characteristics in one coating formulation.
Patent CA-2219925-C (CA)
Title: Element d'antenne donnant deux polarisations orthogonales
Inventor: JOSTELL ULF
IPC: H01Q9/04
Filed: 1996-04-29
Granted: 2006-03-14
Abstract: La présente invention concerne un élément d'antenne conçu pour l'émission et la réception de polarisations orthogonales avec une bonne pureté de polarisation du rayonnement électromagnétique. L'élément comprend un plan de sol (2) et au moins un disque de rayonnement (1) connectés à deux orifices (4, 5) fournissant un rayonnement électromagnétique, de préférence dans la gamme des micro-ondes. La distance entre le plan de sol (2) et le disque de rayonnement (1) est une fraction de la longueur d'onde  lambda  du rayonnement. Cet élément d'antenne est notamment caractérisé par une position des orifices (4, 5) comportant entre eux un écart électrique de 90 DEG , et l'adjonction d'un transformateur quart-d'onde (6) entre le plan de sol (2) et le disque de rayonnement (1), lequel transformateur est configuré de façon que l'impédance propre à la ligne de transmission entre les orifices (4, 5) est réduite, ce qui permet de rendre les orifices indépendants l'un de l'autre en matière de rayonnement.
Patent CA-2224402-C (CA)
Title: Capacitance based tunable micromechanical resonators
Inventor: ADAMS SCOTT G
IPC: H03H9/205
Filed: 1996-06-20
Granted: 2008-06-17
Abstract: A tunable electromechanical resonator structure incorporates an electrostatic actuator (66, 68) which permits reduction or enhancement of the resonant frequency of the structure. The actuator consists of two sets of opposed electrode fingers, each set having a multiplicity of spaced, parallel fingers (70, 72, 84, 90). One set (70, 72) is mounted on a movable portion (54) of the resonator structure and one set (84, 90) is mounted on an adjacent fixed base (132, 134) on the substrate, adjacent ends spaced apart by a gap (86, 92). An adjustable bias voltage (130) across the sets of electrodes adjusts the resonant frequency of the movable structure.
Patent CA-2226845-C (CA)
Inventor: JARVIS EDWARD C
IPC: G02C11/08
Filed: 1996-07-03
Granted: 2003-03-25
Abstract: An impact resistant face shield that includes a single formed arcuate lens portion (12) that, in a first orientation has a first curvature (16) extending in a horizontal direction and a second curvature (18) extendi ng in a vertical direction. The lens portion has a top portion and a bottom portion (20) that extends relatively inwardly toward the face of th e wearer relative to an intermediate portion disposed between the top and bottom portions. Each curvature of the lens defines an arc of a circle having a substantially uniform radius to produce nominal levels of distortion, thereby reducing the prism effects created by the lens , and providing an optically corrected viewing window.
Patent CA-2229073-C (CA)
Inventor: FISH LAURENCE H
IPC: H04B3/30
Filed: 1997-01-14
Granted: 2002-04-23
Abstract: A method and apparatus are provided for protecting a non-isolated data communications cable against ground skew used with an AC power source. A current summing transformer (20) is coupled to an AC power source. The curre nt summing transformer includes a single transformer core (20A) and a plurality  of coils. One of the coils is connected in series with each phase, neutral ( if present) and ground line in the AC power source. The plurality of coils are substantially identical. Each coil has an identical number of turns and an identical direction of winding on the transformer core (20A). The current summing transformer (20) is only needed in the power path to one of two or more interconnected systems (22). The current summing transformer (20) introduces a high impedance to surge current in the data cable ground of one  or many non-isolated data cables attached to the system and at the same time  offers substantially zero impedance to the normal power currents including leakage and fault ground currents.
Patent CA-2230777-C (CA)
Title: Systeme evolue a luminescence synchrone
Inventor: VO-DINH TUAN
IPC: G01N21/64
Filed: 1995-09-01
Granted: 2003-03-18
Abstract: Procédé et appareil permettant de déterminer l'état d'un tissu ou de réaliser d'autres identifications chimiques. Ce procédé consiste à exposer l'échantillon à une source lumineuse (22) et à utiliser un système à luminescence synchrone (38, 50) pour produire un spectre qui peut être analysé afin de déterminer l'état du tissu.
Patent CA-2233619-C (CA)
Inventor: SIKKEMA DOETZE JAKOB
IPC: C07C51/15
Filed: 1996-10-21
Granted: 2006-02-21
Abstract: Described is a process for dicarboxylating dihydric phenols, notably those where the hydroxyl groups are in the para- or the ortho-position vis-à-vis one another. More particularly, the invention pertains to a process for preparing 2,5-dihydroxyterephthalic acid (2,5 DHTA). The invention consists in that dihydric phenol is contacted with carbon dioxide in the presence of an alkali metal carbonate, the reaction being carried out in the presence of an alkali metal formate, at a temperature above the formate's melting point. The invention has several advantages over the well-known Kolbe-Schmitt reaction and other known carboxylation reactions, such as a lower operating pressure, higher yields, and/or shorter reaction times.
Patent CA-2235174-C (CA)
Title: Methode et appareil pour produire en continu du tofu renfermant une garniture
Inventor: IWAMOTO HIROAKI
IPC: A23L11/00
Filed: 1998-04-17
Granted: 2004-02-24
Abstract: La présente invention concerne une méthode et un appareil pour produire en continu du tofu. Une première buse d'alimentation en soja 21 est positionnée sur un convoyeur 10 pour alimenter en lait de soja jusqu'à la moitié de l'épaisseur du tofu à produire. Une unité de trémie 41 est fournie pour placer les garnitures G sur le lait de soja porté par le convoyeur. En outre, une seconde buse d'alimentation en lait de soja est prévue pour fournir du lait de soja supplémentaire sur le lait de soja avec la garniture porté sur le convoyeur jusqu'à un certain niveau. Un procédé de solidification et un procédé de maturation des matériaux placés sur le convoyeur pour progresser avec le temps pendant les étapes de fourniture. Après solidification, le résultat de ces étapes est un tofu avec un centre garni.
Patent CA-2237825-C (CA)
Inventor: IKEDA SHIGEJI
IPC: H03H21/00
Filed: 1998-05-15
Granted: 2001-02-13
Abstract: An object of this invention is to provide an adaptive filter capable of reducing a convergence time and residual error even when there exists an interval having a small input signal power for a long time, and an adapting method thereof.          The adaptive filter comprises a signal power monitoring circuit for receiving an input signal and outputs of delay elements and outputting a first stop signal for stopping tap position control and a second stop signal for stopping coefficient updating and a coefficient updating control circuit for receiving the second stop signal and an error signal outputted by a subtracter and outputting the error signal or zero to coefficient generating circuits as an updating signal.  The signal power monitoring circuit calculates a sum of powers of all or part of signals of the delay elements, so that if the power sum is smaller than a first threshold, it turns on the first stop signal to stop the tap position control and if the sum is smaller than a second threshold, turns on the second signal to stop the coefficient updating.
Patent CA-2239368-C (CA)
Title: Manchon de soudage et procede de formation de ce manchon
Inventor: VELTHUIZEN WILLEM
IPC: B23K35/14
Filed: 1996-12-04
Granted: 2005-03-22
Abstract: La présente invention concerne un manchon de soudage comprenant un manchon fendu en matière d'apport pour soudage, dont la forme des faces d'extrémité permet un raccordement par liaison de forme. L'invention concerne aussi un procédé de formation d'un tel manchon de soudage consistant: i) à prévoir une bande de matière d'apport pour soudage dont la forme des faces d'extrémité permet un raccordement par liaison de forme; et ii) à cintrer cette bande pour former un manchon, les éléments de raccordement s'insérant l'un dans l'autre.
Patent CA-2243906-C (CA)
Title: Railcar brake structure
Inventor: HAIGHT RICHARD C
IPC: B60T17/04
Filed: 1998-07-23
Granted: 2007-11-13
Abstract: An articulated railcar has several well car units for carrying shipping containers, highways trailers, or a combination of the two. The well car units permit the nose of a highway trailer to overhang the articulated connection between two adjacent cars. A brake valve is located in a relief formed in the main bolster of one of the articulated units, out of the way of the overhanging trailer. Each well car unit has a side beam having a roll formed top chord reinforced by a top chord plate, a downwardly extending web, and a lower sil l formed of a thick angle. The service, or auxiliary, and emergency brake reservoirs are mounted in a saddle bag configuration to the outside face of the webs of the opposite sid e beams of the articulated unit, tucked underneath the reinforced roll formed top chord.</S DOAB>
Patent CA-2247656-C (CA)
Inventor: CATANACH WALLACE M III
IPC: B65G47/46
Filed: 1998-09-16
Granted: 2004-04-13
Abstract: A baggage pusher device for pushing baggage off a moving conveyor comprises a pusher cam with a pusher surface, a shaft supporting and rotating the pusher cam in a generally horizontal plane, a motor assembly and a frame to support at least the shaft. The pusher surface follows the Archimedes spiral function so that baggage contacting the pushing surface at any point therealong sees the same velocity. Control of the velocity assures that the baggage will not be damaged by high speed contact with the pushing device. The motor assembly utilizes a servo control with flux vector technology for quiet motor operation and smooth pusher device acceleration and deceleration.
Patent CA-2250050-C (CA)
Title: Apparatus and method for reducing speech recognition vocabulary perplexity and dynamically selecting acoustic models
Inventor: WONG CHI
IPC: H04M3/42
Filed: 1997-01-09
Granted: 2002-06-25
Abstract: A method of reducing the perplexity of a speech recognition vocabulary and dynamically selecting speech recognition acoustic model sets used in a simulated telephone operator apparatus. The directory of users of the telephone network is subdivided into subsets wherein each subset contains the names of users within a certain location or exchange. A speech recognition vocabulary database is compiled for each subset and the appropriate database is loaded into the speech recognition apparatus in response to a requested call to the location covered by the subset. Furthermore, a site-specific acoustic model set is dynamically loaded according to the location of a calling party. An apparatus for carrying out the method is also discussed.
Patent CA-2250559-C (CA)
Inventor: KAHN COLIN LEON
IPC: H04W16/30
Filed: 1998-10-15
Granted: 2002-12-31
Abstract: Sharing the existing sector antennas at the base station each of which corresponds to one sector of the outer communication coverage area to create an omnidirectional inner communication coverage area. When transmitting or receiving data from a mobile in one sector of the outer communication coverage area only one antenna is used, and when transmitting or receiving data from a mobile in the inner communication coverage area all the antennas are used. This allows an increase in capacity of the hybrid inner/outer sectored cell without the additional cost of adding further antennas.